工业过程测量 控制和自动化 用于系统评估的系统属性评估 第7部分：系统安全评估（2.0 版）

[中文适用范围]： IEC 61069的本部分：?C规定了基于IEC 61069-1的基本概念和IEC 61069-2@的方法论的基本控制系统（BCS）系统安全评估的详细方法。系统安全属性@ ?C 描述了影响系统安全的因素以及评估系统安全性时需要考虑的因素@ 和?C 提供了从一组选项（带参考）中选择技术来评估系统安全性的指导。本标准中的安全处理仅限于 BCS 本身可能存在的危险。也就是说@BCS本身作为一个物理实体不会造成危险。不考虑待评估的 BCS 控制下的过程或设备可能引入的危险。 [外文原描述]： IEC 61069-7:2016 specifies the detailed method of the assessment of system safety of a basic control system (BCS) based on the basic concepts of IEC 61069-1 and methodology of IEC 61069-2, defines basic categorization of system safety properties, describes the factors that influence system safety and which need to be taken into account when evaluating system safety, and provides guidance in selecting techniques from a set of options (with references) for evaluating the system safety. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - reorganization of the material of IEC 61069-7:1998 to make the overall set of standards more organized and consistent; - IEC TS 62603-1 has been incorporated into this edition.